Improvement of the safety in international transportation is achievable by the efforts of airlines in obtaining novel and safe aviation. The main objective of this paper is considering the consequences of 1995 United States sanction against the Islamic Republic of Iran airlines. In legal examination of the Regulations, we concluded that the U.S. sanctions is an obvious non Conformity to the letter and spirit of the Chicago Convention thus, we proofed that the ICAO as a technical UN agency needs and also expected to take the lead to bring international public pressure on the United States, as a Member State, to remove the sanctions. Moreover, it is suggested that authorities of civil aviation organization, after legal & effective conduct in ICAO, to take the case to ICJ or ad hoc arbitral tribunal.
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